The US public is split nearly 50/50 between those who favor nuclear power and those who don’t. Because of this, nuclear is often a dirty word in the political arena. Nobody wants to lose half their constituency over a marginal issue like nuclear power. Before 1979, the political climate was ripe for the rapid expansion of nuclear power. However, the Three Mile Island accident resulted in the cancellation of most new nuclear plant projects. 30 years later, the public was just starting to warm up to the idea of nuclear as part of the so-called “nuclear renaissance.” Then, in a case of incredibly poor timing, the Fukushima disaster struck.

There is a lot of weird cultural weight attached to the “N-word”, not the least due to an entire generation being psychologically scarred by the perceived overhanging threat of nuclear war. Unfortunately, this snubs one of humanity’s greatest hopes for survival.

Nuclear might not be cost-effective as geothermal, wind, or hydro power. It also isn’t as clean as solar. However, I would argue that neither cost-effectiveness nor cleanliness displaces nuclear from being the best “clean” energy source available. And not only would widespread adoption of nuclear energy entirely solve the climate crisis, it would save humanity from eventual extinction by hastening our spread through the universe.

As I see it, the only other power source that is as scalable as nuclear is solar. Solar, however, loses out on two counts. First, it is really expensive compared to, like, any other power source. Second, the energy density of solar is really, really low. We would need to cover 496,805 square kilometers of area with solar panels to satisfy the world’s projected energy consumption in 2030. While the price of solar power has really come down, that’s also in part due to subsidized research. On the other hand, nuclear has a much higher power density, and despite years of marginalization, is still competitive with current cutting-edge solar power. It is also extremely reliable, with fluctuations in power output virtually non-existent. This is something other forms of renewable energy lack.

If we started investing in nuclear research, we could dramatically lower the costs of nuclear power and satisfy a huge portion of the world’s energy demands. Cheap electricity would hasten the wide-spread use of electric cars (okay, this would probably happen anyways). With combustion cars and both natural gas and coal plants replaced, the influx of greenhouse gases into the environment would be greatly reduced. Cheap, portable reactors would allow developing countries to get on their feet in terms of manufacturing capability. Cheap energy would allow us to implement energy-intensive climate engineering schemes. Advanced nuclear technology would lead to the development of closed-core nuclear rockets, allowing safe, clean, and cheap access to space. Portable reactors would jump-start unmanned planetary exploration, interstellar exploration, human colonization, and asteroid mining.

Of course, none of this will happen. Nuclear is still a dirty word, burdened by the historical and cultural baggage it must drag around. The first step to a better, cleaner future is to get the public to accept nuclear power. As long as we are afraid to say the word, we are holding ourselves back from achieving our full potential.